Ruling · Mahāṣṭamī (Durgāṣṭamī) · 1990

Thursday 27 September

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 502 minutes.

Decide it for

BaodingDelhiKolkataSingaporeSydneyJersey City

38°52′ N 115°28′ E · Asia/Shanghai · GeoNames 1816971

The two middays

One ghaṭī is 24 minutes. Madhyāhna is 1 ghaṭikā either side of midday.

Midday of Wednesday 26 September

Aṣṭamī is absent from madhyāhna. Not taken.

madhyāhna begins 11:45  12:33 madhyāhna ends
10:5711:2111:4512:0912:3312:5713:21

0 of 48 minutes covered

Midday of Thursday 27 September

Taken. The only midday Aṣṭamī reaches.

madhyāhna begins 11:45  12:33 madhyāhna ends
10:5711:2111:4512:0912:3312:5713:21

48 of 48 minutes covered

Aṣṭamī presentMadhyāhna, the window the rule readsThe instant the tithi begins or ends

How it was decided

  1. 01

    Aṅga

    Aṣṭamī runs from 20:56 on Wed 26 Sep to 23:10 on Thu 27 Sep.

    1990-09-26T12:55:35Z → 1990-09-27T15:10:07Z

  2. 02

    Kāla

    Madhyāhna is 1 ghaṭikā either side of midday: 11:45–12:33 on the 26th, 11:45–12:33 on the 27th.

    madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′

  3. 03

    Rule

    Aṣṭamī must be present during madhyāhna. It covers 0 of 48 minutes on the 26th and 48 of 48 on the 27th.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104

  4. 04

    Tie-break

    Only one midday qualifies. No tie-break is needed.

    priority: paraviddha → only-day · margin 30133 s

  5. 05

    Ruling

    Mahāṣṭamī, Baoding, 1990: Thursday 27 September.

    confidence: determinate

Say it like this

In Baoding, Mahāṣṭamī (Durga Ashtami) 1990 falls on Thursday 27 September. Aṣṭamī runs from 20:56 on Wed 26 Sep to 23:10 on Thu 27 Sep and covers all of madhyāhna that midday.

ahargana.org/baoding/festivals/1990/mahashtami · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingThu 27 Sep
Ahargaṇa, classicalDisc centre, no refractionThu 27 Sep
compat-drikpanchangComparison profileThu 27 Sep
No institution has a recorded ruling for Baoding.

Institutional rulings are recorded with a source address, and are never edited to agree.

The rule, as data

/rules/mahashtami · ruleset 2026.3-draft

Month
Āśvina, amānta
Pakṣa · aṅga
Śukla · Aṣṭamī
Kāla
Madhyāhna
Priority
Paraviddhā
Tie-break
Second day
Reference
CRC 1955, p. 104

“S 8 Mahastami (paraviddha)” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104.

The same rule, elsewhere

Twelve places, west to east. Local clock times.

PlaceAṣṭamīMadhyāhna 26thCoveredMadhyāhna 27thCoveredRuled
Los Angeles05:56 → 08:1012:2048 min12:200 min26 Sep
Chicago07:56 → 10:1012:1848 min12:170 min26 Sep
Jersey City08:56 → 11:1012:2348 min12:230 min26 Sep
Port of Spain08:56 → 11:1011:3348 min11:330 min26 Sep
London13:56 → 16:1012:270 min12:2748 min27 Sep
Durban14:56 → 17:1011:240 min11:2348 min27 Sep
Dubai16:56 → 19:1011:460 min11:4648 min27 Sep
Delhi18:26 → 20:4011:480 min11:4848 min27 Sep
Kolkata18:26 → 20:4011:040 min11:0448 min27 Sep
Singapore20:56 → 23:1012:320 min12:3248 min27 Sep
Sydney22:56 → 01:1011:230 min11:2348 min27 Sep
Suva00:56 → 03:1011:340 min11:3448 min27 Sep
Profile · tradition
pac-rp@2026.1 · smarta
Rule
mahashtami@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s

About Ahargaṇa